At the moment I'm using alpha blending to layer quads on top of each other. I would like to mask a subset of these, I can do this using the stencil buffer, but this cannot support alpha(i think, not sure). So is it possible to apply an alpha mask and still be able to blend drawn quads with the previously drawn geometry. I have read nehe's tutorial on masking but cannot see how it is possible to use this and still alpha blend with the background. any suggesions? thankin u all. [edited by - gk on March 8, 2003 8:00:17 PM] [edited by - gk on March 8, 2003 8:01:08 PM] [edited by - gk on March 8, 2003 8:02:10 PM]